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ZnSe quantum dot-doped glass and preparation method thereof

A technology of doping glass and quantum dots, which is applied in the field of ZnSe quantum dot-doped glass and its preparation, can solve the problems of low fluorescence intensity and inability to meet the requirements of practical applications, and achieve improved solubility, enhanced chemical stability, and composition The effect of regulation optimization

Inactive Publication Date: 2018-08-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that ZnSe quantum dot doped glass only obtains defect luminescence with low fluorescence intensity, which cannot meet the requirements of practical applications

Method used

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  • ZnSe quantum dot-doped glass and preparation method thereof
  • ZnSe quantum dot-doped glass and preparation method thereof
  • ZnSe quantum dot-doped glass and preparation method thereof

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Effect test

Embodiment 1

[0037] The molar ratio of the glass chemical composition of the present embodiment is SiO 2 : 35l%; B 2 o 3 : 15%; Na 2 O: 14%; Li 2 O: 10%; ZnO: 20%; ZnSe: 6%. The chemical raw materials weighed according to the above molar percentages are mixed uniformly, melted at a high temperature of 1350°C for 50 minutes, shaped, and annealed to obtain the original glass, which is recorded as G1, which is cut into a specific size for heat treatment.

[0038] Next, the original glass was heat-treated at 540°C, 560°C, and 580°C for 10 h, and cooled to room temperature with the furnace to obtain ZnSe quantum dot silicate glass samples, which were denoted as G2, G3, and G4, respectively. The absorption and fluorescence spectra were as follows: figure 1 As shown in (a) and (b), AP represents the original glass sample without heat treatment, and 540°C / 10h, 560°C / 10h, and 580°C / 10h represent the heat treatment conditions. From the absorption spectrum, it can be seen that the absorption edg...

Embodiment 2

[0040] The mole percent of the glass chemical composition of the present embodiment is SiO 2 : 45%; B 2 o 3 : 5%; Na 2 O: 14%; Li 2 O: 10%; ZnO: 20%; ZnSe: 6%. The chemical raw materials weighed according to the above molar percentages are mixed uniformly, melted at a high temperature of 1350°C for 50 minutes, shaped, and annealed to obtain the original glass, which is recorded as G5, which is cut into a specific size for heat treatment.

[0041] Then the original glass was heat-treated at 540°C, 560°C, and 580°C for 10 h, and cooled to room temperature with the furnace to obtain ZnSe quantum dot silicate glass samples, which were denoted as G6, G7, and ZnSe quantum dot silicate glass samples respectively. G8, the absorption spectrum and fluorescence spectrum are as follows figure 2 As shown in (a) and (b), AP represents the original glass sample without heat treatment, and 540°C / 10h, 560°C / 10h, and 580°C / 10h represent the heat treatment conditions. From the absorption ...

Embodiment 3

[0044] The molar ratio of the glass chemical composition of the present embodiment is SiO 2 : 45%; B 2 o 3 : 5%; Na 2 O: 20%; ZnO: 21%; ZnSe: 9%. The chemical raw materials weighed according to the above molar percentages are mixed uniformly, melted at a high temperature of 1350°C for 50 minutes, shaped, and annealed to obtain the original glass, which is recorded as G9, which is cut into a specific size for heat treatment.

[0045] Then heat-treat the original glass at 540°C, 560°C, and 580°C for 10 h, and cool to room temperature with the furnace to obtain ZnSe quantum dot silicate glass samples, which are denoted as G10, G11, and ZnSe quantum dot silicate glass samples respectively. G12, absorption spectrum and fluorescence spectrum are as follows Figure 6 As shown in (a) and (b), AP represents the original glass sample without heat treatment, and 540°C / 10h, 560°C / 10h, and 580°C / 10h represent the heat treatment conditions. Such as Figure 6 (a) As shown in the absorp...

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Abstract

The invention provides ZnSe quantum dot-doped glass and a preparation method thereof. The ZnSe quantum dot-doped glass comprises the following components according to the molar percentage: 35-50 percent of SiO2, 0-15 percent of B2O3, 5-20 percent of Na2O, 0-10 percent of Li2O, 6-25 percent of ZnO and 4-9 percent of ZnSe. The preparation method of the ZnSe quantum dot-doped glass comprises the following steps: weighing a certain amount of raw materials according to the above molar percentage, fully and uniformly mixing, melting for 30-60 minutes at a temperature of 1300-1450 DEG C and then forming. The ZnSe quantum dot-doped glass and the preparation method thereof provided by the invention have the beneficial effects that a ZnSe quantum dot is successfully prepared in borosilicate for thefirst time, and the intrinsic luminescence wavelength of the ZnSe quantum dot is continuously adjustable within the range of 400-450 nm; the ZnSe quantum dot-doped glass prepared by the invention hasgood chemical stability and higher intrinsic luminescence and is a very promising luminescent material.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a ZnSe quantum dot doped glass and a preparation method thereof. Background technique [0002] Due to the unique properties that general bulk materials and molecular materials do not have, such as quantum confinement effects, surface effects, and size effects, semiconductor quantum dots have shown great application value in many fields. After decades of continuous research and development, semiconductor quantum dots have made significant progress in preparation technology, performance research and application. At present, quantum dots have made breakthroughs in the fields of biomedicine, photocatalysis, photoelectric devices[, and solar cells, especially in the field of fluorescent labeling of living organisms. There are already complete imaging theories and mature practical technologies. [0003] According to the composition, quantum dots can be divided into: II-VI group, I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03C4/12C03C3/066
CPCC03C3/066C03C4/12C03C14/004C03C2214/16C03C2214/30
Inventor 刘超李凯韩建军
Owner WUHAN UNIV OF TECH
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